The Department of Homeland Security is looking at a new system that will be able to hear a gunshot and track its location. Guess what? If the Department of Homeland Security can hear a gunshot, they can also hear your private conversations:
"A sergeant for the Richmond Police Department told the Times he could hear, “doors slamming, birds chirping, cars on the highway, horns honking."
These systems can also record conversations, which raises questions about the limits of police surveillance. Indeed, one murder case in New Bedford, Mass. is expected to hinge on a recorded argument, according to the Times."
DHS Looking at New D.C. "gunshot" Surveillance System